"immediate constituents" is correct and usable in written English.
You can use it when discussing the specifics of a sentence structure. For example, "The immediate constituents of the sentence are subject, verb and object."
Not all of them, however, are its immediate constituents.
The immediate constituents of "lost his watch" are "lost" and "his watch"; the immediate constituents of "his watch" are the forms "his" and "watch".
The immediate constituents of "the old man" are "the" and "old man".
Under the first of the two interpretations, the immediate constituents are "old" and "men and women"; under the second, they are "old men" and "women".
In the sentence "The old man ran away," the first division into immediate constituents would be between "the old man" and "ran away".
It is analyzable into the immediate constituents "poor John" and "lost his watch," and each of these phrases is analyzable into its own immediate constituents and so on, until, at the last stage of the analysis, the ultimate constituents of the sentence are reached.
Immediate constituent analysis, also called Ic Analysis, in linguistics, a system of grammatical analysis that divides sentences into successive layers, or constituents, until, in the final layer, each constituent consists of only a word or meaningful part of a word.
Tagmemics is an outgrowth of Bloomfieldian immediate constituent analysis and of Pike's own general theory of human behaviour, described in his Language in Relation to a Unified Theory of the Structure of Human Behavior, 3 vol. (1954 60; 2nd ed. 1967).
According to Russellianism, on the other hand, we can think about an individual directly; we can have a thought about an individual by having that individual as an immediate constituent of the thought.
In the immediate future, constituents must vocally encourage their US senators and representatives to support the Democracy Restoration Act (DRA), federal legislation that seeks to restore voting rights in federal elections to the millions of disenfranchised Americans who have been released from prison and are living peacefully in their communities, but who are still denied the right to vote.
Then, the introduction of TO or CB droplets with very higher vapor pressure during the second spinning stage induced the immediate freezing of the constituents on spinning and the rapid formation of the MAI PbI2 DMSO phase, producing a full and even precursor layer.
